Half-life. Radium Ra has a half-life of about 3.6 days. 88 (a) Given 1 gram, how much will still be present after 1 day? (b) After 1 year?

Q: An article on the "Iceman" stated that the frozen corpse was 5,000 to 5,500 years old. Assuming the…

A: To find - How much carbon-14 should it contain.

Q: A wooden artifact from an ancient tomb contains 45 percent of the carbon-14 that is present in…

A: Let the decay model for wooden artifact is: T=Toe-kt……1 where T=Present quantity of…

Q: A wooden artifact from an ancient tomb contains 35 percent of the carbon-14 that is present in…

A: The general formula for radioactive decay of the Carbon-14 in terms of half life is,…

Q: A wooden artifact from an ancient tomb contains 35 percent of the carbon-14 that is present in…

A: We have to find out time

Q: Aburial cloth of egyptian mummy is estimated to contained 59% carbon -14 it contained originally.…

A: Initial carbon= 100%=1 Final carbon= 59%= 0.59 Decay factor =1/2  Half life= 5730 time=t=?

Q: Estimating the Date That a Prehistoric Man Died The bonesof a prehistoric man found in the desert of…

A: Bones of the prehistoric man contain 5% of original carbon14. The half life of carbon14 is 5730…

Q: 9. Radioactive Decay The half-life of radium is 1690 years. If 10 grams is present now, how much…

A: The half-life of any substance represents the time required by that substance to reduce to half of…

Q: Carbon-14 dating assumes that the carbon dioxide on Earth today has the same radioactive content as…

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Q: A wooden artifact from an ancient tomb contains 30 percent of the carbon-14 that is present in…

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Q: The half life of radon in 4 days . From a sample of 450g determine an equation that can be used to…

A: The half life is the time period in which the half of the initial quantity of substance is consumed…

Q: 30% of a radioactive substance has decayed after 10years, what is its half-life? 15.9 years 16.7…

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Q: Radioactive decay The mass of radioactive material in a sample has decreased by 30% since the decay…

A: We know that a function that decrease exponentially has the form yt=y0e-kt, where y0=y0 is the…

Q: A wooden artifact from an ancient tomb contains 25 percent of the carbon-14 that is present in…

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Q: A certain radioactive substance decays by 1.2% each year. Find the half life of the substance.

A: A(t)= A0(0.5)t/h  h is the half life

Q: A certain radioactive substance decays by 1.1% each year. Find the half-life of the substance, to 2…

A: Solution:-

Q: Carbon-14 dating assumes that the carbon dioxide on Earth today has the same radioactive content as…

A: Let a be the amount of radioactive content in the charcoal. So, if λ is the decay rate, then we can…

Q: Find the doubling time of an investment earning 6% interest if interest is compounded continuously.…

A: Given query is to find the time to double the investment, if compounded continuously.

Q: 3. The amount A, micrograms of a certain radioactive substance remaining after t years decreases…

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Q: (a) An archaeological artifact is found to have 45% of its original carbon-14. How old is the…

A: Half life and decay

Q: A fossilized bone is found to contain 0.1% of its original amount c-14. Half-life of c-14 is 5730…

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Q: . Radioactive Radon After 3 days a sample of radon-222 has decayed to 58% of its original amount.…

A: Given, mass of radon-222 decayed 58% of original amount m(t)=m(3)=0.58m0 0.58m0=m0e3ke3k=0.58 take…

Q: 7. A $7,000 investment earns 9% interest, compounded continuously. Find its value after 3 years.

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Q: What is the third-life of Woosterium-21? That is, find the time it takes a sample of Woosterium-21…

A: Exponential Decay Law A=A0e-kt t - time A - amount of sample after time t A0 - amount of sample at…

Q: 10)A doctor prescribes 300 milligrams of therapeutic drug that decays by about 10 % each hour. What…

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Q: A certain radioactive substance decays by 3.3 % each year. Find the half-life of the substance, to 2…

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Q: A wooden artifact recovered from a tomb contains 54% of the carbon-14 that is present in living…

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Q: An unknown radioactive element decays into non-radioactive substances. In 340 days the radioactivity…

A: The half life equation is P(t)=P(0)×0.5(t/H) P(0) is the quality at time t

Q: An unknown radioactive element decays into non-radioactive substances. In 660 days the radioactivity…

A: According to the given information, an unknown radioactive element decays into non-radioactive…

Q: A sample of a radioactive substance decayed to 93% of its original amount after a year. (Round your…

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Q: Cobalt-60 has a half-life of 5.24 years. a. Find the mass that remains from a 100-mg sample after 20…

A: (a) Consider the mass remains from m0 mg sample after n years as m(t). The exponential equation can…

Q: Half-Life 19.8 days Decay Rate, k

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Q: Use the half-life information (picture) from the table to work the exercise.  Estimate the age of a…

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Q: - of the carbon-14 that is present in living trees. How long ago was the artifact made? (The…

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Q: A radioactive substance decays by 0.2% each year. a) If you started with 90mg of this substance, how…

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Q: Poaching is causing a population of elephants to decline by 5%pwr year. What is the half life for…

A: Given, the population of elephants decline by 5% per year. we know that half life formula is:…

Q: Q5: A sample contains 1 gram of Radium. Will more than 0.5 gram of Radium remain after 1000 year?…

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Q: An account has $26,000 after 15 years. The account received 2.3% interest compounded continuously.…

A:

Q: Please show work

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Q: Half-life: 2778 years Decay Rate, k: _____

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Q: 8. Radium-226 has a half-life of 1600 years. Geologists find a rock and determine it contains 70% of…

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Q: A deposit of $2500 is made in an account that pays an annual interest rate of 5%. Find the balance…

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Q: 12. Given Bismuth-214 has a half-life of 20 minutes. What percent of the original amount is left…

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Q: A sum of $10,000 is invested at an annual rate of 8%. Find the balance in the account after 5 years…

A: Given that, The invested amount is P=$10,000. The rate of interest is r=8%=8100=0.08 The time…

Q: A sample of a radioactive substance decayed to 92% of its original amount after a year. (Round your…

A: Given,A sample of a radioactive substancedecayed to 92% of its original amount after a year.

Q: The amount A, micrograms of a certain radioactive substance remaining after t years decreases…

A: We will use the fact that at half life the amount of the substance remaining is (A_o)/2 to find the…

Q: The half - life of a substance is 50years. Determine the amount of time needed for the substance to…

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Q: Radium-226, a common isotope of Radium, has half-life of 1,700 years. A certain chemist has a…

A: The amount remaining of the object with half-life can be calculates using the half-life formula. The…

Q: 6. A 40mg sample of a radioactive isotope decays to 30mg in 6.0 hours. Determine its half life, to 2…

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Q: Half-Life decay Rate,k 2208 years

A: